1QLP

2.0 ANGSTROM STRUCTURE OF INTACT ALPHA-1-ANTITRYPSIN: A CANONICAL TEMPLATE FOR ACTIVE SERPINS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.231 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

Topography of a 2.0 A structure of alpha1-antitrypsin reveals targets for rational drug design to prevent conformational disease.

Elliott, P.R.Pei, X.Y.Dafforn, T.R.Lomas, D.A.

(2000) Protein Sci 9: 1274-1281

  • DOI: https://doi.org/10.1110/ps.9.7.1274
  • Primary Citation of Related Structures:  
    1QLP

  • PubMed Abstract: 

    Members of the serpin family of serine proteinase inhibitors play important roles in the inflammatory, coagulation, fibrinolytic, and complement cascades. An inherent part of their function is the ability to undergo a structural rearrangement, the stressed (S) to relaxed (R) transition, in which an extra strand is inserted into the central A beta-sheet. In order for this transition to take place, the A sheet has to be unusually flexible. Malfunctions in this flexibility can lead to aberrant protein linkage, serpin inactivation, and diseases as diverse as cirrhosis, thrombosis, angioedema, emphysema, and dementia. The development of agents that control this conformational rearrangement requires a high resolution structure of an active serpin. We present here the topology of the archetypal serpin alpha1-antitrypsin to 2 A resolution. This structure allows us to define five cavities that are potential targets for rational drug design to develop agents that will prevent conformational transitions and ameliorate the associated disease.


  • Organizational Affiliation

    Department of Medicine, University of Cambridge, The Wellcome Trust Centre for Molecular Mechanisms in Disease, Cambridge Institute for Medical Research, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ALPHA-1-ANTITRYPSIN394Homo sapiensMutation(s): 0 
Gene Names: ALPHA-1-ANTITRYPSIN
UniProt & NIH Common Fund Data Resources
Find proteins for P01009 (Homo sapiens)
Explore P01009 
Go to UniProtKB:  P01009
GTEx:  ENSG00000197249 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01009
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.231 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 114.68α = 90
b = 39.26β = 104.21
c = 90.27γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1999-09-27
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-22
    Changes: Data collection, Other, Refinement description
  • Version 1.4: 2019-10-09
    Changes: Data collection, Database references, Other
  • Version 1.5: 2023-12-13
    Changes: Data collection, Database references, Refinement description